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Upgrading Access Interpretation Database

Introduction

Access-based interpretation databases are no longer supported in Geocene3D and have been replaced by the SpatiaLite format. To continue working with existing data, a one-time conversion to SpatiaLite is required.

During the conversion, a new SpatiaLite .sqlite file is created, and all valid interpretation data is copied into it. Once the conversion is complete, the new database is ready for use — you can start edit sessions and add new interpretation points as needed.

Converting Access to SpatiaLite

Step-by-Step Workflow

1. Open the Source Manager

  • Click the Source Manager icon in the toolbar or use the Manager menu.

2. Find the Access database

  • In the source list, locate the Access source file to convert.

3. Right-click and convert

  • Right-click the Access source and select Convert To SpatiaLite… from the context menu.

4. Configure conversion settings

  • Click Points EPSG… and choose the appropriate EPSG code
  • Set the Destination File Name for the new .sqlite file
  • Click Convert and Replace

5. Check result in Source Manager

  • A new SpatiaLite source is added to the list
  • The original Access source remains but is no longer used
  • Any linked point layers (e.g., L1, L2) are now automatically connected to the new SpatiaLite file

  • Optional: Select “Used by” to see which interpretations point are now using the new Spatialite file

6. Start editing

  • The project is now ready to continue with the converted database
  • You can start a new edit session to add points to the new database

Additional Information

Tables Converted

  • Only tables with UID, X, Y, and Z columns are included in the conversion
  • These columns are required for a table to be recognized as an interpretation table
  • For each valid table, all standard fields are preserved in the SpatiaLite output
  • Tables are included even if they were not point layers in layer manager
  • This ensures a complete and independent conversion of all valid interpretation tables

Coordinate Handling

  • During conversion, the X and Y columns from Access are merged into a single geometry field named XYPoint
  • This field is stored as a 2D POINT with the selected EPSG code, used for correct placement in external GIS tools (e.g., QGIS)
  • The Z value is kept as a separate column representing elevation
  • Geocene3D itself does not use projections, so the EPSG code is only relevant when working with external applications

Stand-Alone Conversion

  • Access sources can be converted immediately after being added, even if no tables are imported or linked to layers
  • In this case, the source appears as Database in the Source Manager
  • This enables a fast, stand-alone upgrade to SpatiaLite without any project setup
  • After conversion, the new .sqlite file can be used in Setup Data for Modeling to add interpretation points

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